Home / 27,795.40-38,356.14-15,217.72

Finding the Fourth Proportional to 27,795.40, 38,356.14 and 15,217.72

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Solution

The fourth proportional to 27,795.40, 38,356.14 and 15,217.72 is: 20,999.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,795.40 : 38,356.14 = 15,217.72 : x
  2. Step 2: Convert to fraction form
    27,795.40/38,356.14 = 15,217.72/x
  3. Step 3: Cross multiply
    27,795.40x = 38,356.14 × 15,217.72
  4. Step 4: Simplify right side
    27,795.40x = 583,692,998.80
  5. Step 5: Solve for x
    x = 583,692,998.80/27,795.40
  6. Step 6: Final answer
    x = 20,999.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.